Sural nerve. The sural nerve is a sensory nerve in the calf region (sura) of the leg. It is made up of collateral branches of the tibial nerve and common fibular nerve. Two cutaneous branches, the medial and lateral, form the sural nerve.
1. Re: what's the best way to travel from Barcelona to Madrid ? Without any doubt, the train is the best way to travel between Madrid and Barcelona. It makes the 620 km (385 miles) that exist between both cities in 2 hours and a half, at speeds up to 300 km/h (186 mph).
There are trains from both Madrid and Barcelona to San Sebastian. Madrid is actually closer to San Sebastian than Barcelona, despite the fact Barcelona and San Sebastian are in the north of Spain. Spain has over 5,000 miles of coastline, much of which is graced with beautiful beaches. Though the tourists flock to the Costa Blanca and the Costa del Sol, there are beautiful beaches all over Spain (well, where there's coastline, anyway!). See below for the best beaches in Spain.